You can find these 3,000 amp battery jump starters priced anywhere from about $70 to $300, and the intense competition results in frequent sales and discounts, especially in those with list prices ...
To jump-start your car, you will need the help of another driver who's happy to lend a hand. Their car must have a fully charged battery with the same voltage as yours (usually 12 volts).
And using a jump pack is effectively the same but instead of using another vehicle, you use a standalone battery designed specifically for the task. Versions for cars tend to use quite large ...